Buggy code:
public abstract class AbstractJob extends Configured implements Tool { private static final Logger log = LoggerFactory . getLogger ( AbstractJob . class ) ; private Option inputOption ; private Option outputOption ; protected Path inputPath ; protected File inputFile ; protected Path outputPath ; protected File outputFile ; protected Path tempPath ; protected Map < String , List < String > > argMap ; private final List < Option > options ; private Group group ; protected AbstractJob ( ) { } protected Path getInputPath ( ) { } protected Path getOutputPath ( ) { } protected Path getOutputPath ( String path ) { } protected File getInputFile ( ) { } protected File getOutputFile ( ) { } protected Path getTempPath ( ) { } protected Path getTempPath ( String directory ) { } protected Path getCombinedTempPath ( String directory1 , String directory2 ) { } protected void addFlag ( String name , String shortName , String description ) { } protected void addOption ( String name , String shortName , String description ) { } protected void addOption ( String name , String shortName , String description , boolean required ) { } protected void addOption ( String name , String shortName , String description , String defaultValue ) { } protected Option addOption ( Option option ) { } protected Group getGroup ( ) { } protected void addInputOption ( ) { } protected void addOutputOption ( ) { } protected static Option buildOption ( String name , String shortName , String description , boolean hasArg , boolean required , String defaultValue ) { } protected static Option buildOption ( String name , String shortName , String description , boolean hasArg , int min , int max , boolean required , String defaultValue ) { } protected Option getCLIOption ( String name ) { } public Map < String , List < String > > parseArguments ( String [ ] args ) throws IOException { } public Map < String , List < String > > parseArguments ( String [ ] args , boolean inputOptional , boolean outputOptional ) throws IOException { } public static String keyFor ( String optionName ) { } public String getOption ( String optionName ) { } public String getOption ( String optionName , String defaultVal ) { } public List < String > getOptions ( String optionName ) { } public boolean hasOption ( String optionName ) { } public int getDimensions ( Path matrix ) throws IOException { } protected void parseDirectories ( CommandLine cmdLine , boolean inputOptional , boolean outputOptional ) { } protected static void maybePut ( Map < String , List < String > > args , CommandLine cmdLine , Option ... opt ) { } public static String getOption ( Map < String , List < String > > args , String optName ) { } protected static boolean shouldRunNextPhase ( Map < String , List < String > > args , AtomicInteger currentPhase ) { } protected Job prepareJob ( Path inputPath , Path outputPath , Class < ? extends InputFormat > inputFormat , Class < ? extends Mapper > mapper , Class < ? extends Writable > mapperKey , Class < ? extends Writable > mapperValue , Class < ? extends OutputFormat > outputFormat ) throws IOException { } protected Job prepareJob ( Path inputPath , Path outputPath , Class < ? extends Mapper > mapper , Class < ? extends Writable > mapperKey , Class < ? extends Writable > mapperValue , Class < ? extends Reducer > reducer , Class < ? extends Writable > reducerKey , Class < ? extends Writable > reducerValue ) throws IOException { } protected Job prepareJob ( Path inputPath , Path outputPath , Class < ? extends InputFormat > inputFormat , Class < ? extends Mapper > mapper , Class < ? extends Writable > mapperKey , Class < ? extends Writable > mapperValue , Class < ? extends Reducer > reducer , Class < ? extends Writable > reducerKey , Class < ? extends Writable > reducerValue , Class < ? extends OutputFormat > outputFormat ) throws IOException { } public static void setS3SafeCombinedInputPath ( Job job , Path referencePath , Path inputPathOne , Path inputPathTwo ) throws IOException { } protected Class < ? extends Analyzer > getAnalyzerClassFromOption ( ) throws ClassNotFoundException { } @ Override public void setConf ( Configuration conf ) { super . setConf ( conf ) ; String oozieActionConfXml = System . getProperty ( "oozie.action.conf.xml" ) ; <START_BUG> if ( oozieActionConfXml != null ) { <END_BUG> conf . addResource ( new Path ( "file://////" , oozieActionConfXml ) ) ; AbstractJob . log . info ( "Added<seq2seq4repair_space>Oozie<seq2seq4repair_space>action<seq2seq4repair_space>Configuration<seq2seq4repair_space>resource<seq2seq4repair_space>{0}<seq2seq4repair_space>to<seq2seq4repair_space>the<seq2seq4repair_space>Hadoop<seq2seq4repair_space>Configuration" , oozieActionConfXml ) ; } } }

Fix:
if ( ( oozieActionConfXml != null ) && ( conf != null ) ) {